6893649828 has 60 divisors (see below), whose sum is σ = 19407632860. Its totient is φ = 2121121728.

The previous prime is 6893649781. The next prime is 6893649869. The reversal of 6893649828 is 8289463986.

It can be written as a sum of positive squares in 2 ways, for example, as 891739044 + 6001910784 = 29862^2 + 77472^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 814123 + ... + 822546.

Almost surely, 2^6893649828 is an apocalyptic number.

It is an amenable number.

6893649828 is an abundant number, since it is smaller than the sum of its proper divisors (12513983032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6893649828 is a wasteful number, since it uses less digits than its factorization.

6893649828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636698 (or 1636687 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 63.

The square root of 6893649828 is about 83028.0062870355. The cubic root of 6893649828 is about 1903.1940576169.

The spelling of 6893649828 in words is "six billion, eight hundred ninety-three million, six hundred forty-nine thousand, eight hundred twenty-eight".